Paint for ships&#39; bottoms.



Flt- 8501 ployed expensive.

X m t) ENT OFFICE.

HARRY LOUDERBOUGH, OF JERSEY CITY, NEW JERSEY.

PAINT FOR SHI PS BOTTOMS.

- SPECIFICATION forming part of Letters Patent No. 652, 7 dated y 3,1900- Application filed September 9, 1899.

To all whom it may concern.-

Be it known that I, HARRY LOUDERBOUGH, a citizen of the United States ofAmerica, residing at Jersey City, Hudson count-y, New Jersey, haveinvented certain new and useful Improvements in Antifouling-Paints, ofwhich the following is a specification.

My invention relates to antifouling-paints for marine use.

Heretofore antifouling-paints have been used wherein copper constitutedan essential ingredient of the paint; but many disadvantages werepresented to the use of such paint. .Thus, for instance, paint in whichcopper enters as an element cannot be used upon the bot-toms of ironvessels, because of the liability of the paint to attack and corrode theiron, and if the paint is used upon wooden vessels it will corrode anddestroy the iron bolts or fastenings. Furthermore, the use of copperrenders the paint in which it is em- The object of my invention is toovercome the disadvantages above pointed out and to provide a cheap andefiicient antifoulingpaint for marine use which may be applied to eitheriron or wooden structuressuch as the iron or wooden bottom of ships, todocks, &c.withont injury thereto and which will preserve such structuresfrom the encroachmentsof barnaole and vegetable growth and the teredoworm, so destructive to wooden structures.

To-these endsmy invention consists of paint of the character to behereinafter described and claimed.

In making an antifouling-paint in accordance with my invention Ipreferably employ to eachgallon'of the paint to be made three quartersof a gallon of a suitable vehicle, five pounds of a metallic antimony,and one and one-half pounds of a suitable metallic dry paint or pigment.The vehicle which I prefer to use consists of forty per cent. pine-tar,forty per cent. benzin, 'ten per cent. kidney-oil,

Serial No. 729,898. (No specimens.)

and ten per cent. rosin. The metallic dry paint or pigment preferablyconsists of forty pei' cent. metallic iron, fifty-five per cent. silica,and five per cent. metallic aluminium.

1 e substances or their equivalents are mixed with the metallic antimonyin substantially the proportions specified, though obviously theproportions may be varied in accordance with the differences incondition and materials of the surfaces treated, though ordinarily Iprefer to use the substances in the proportions stated.

A great advantage of the paint made in accordance with my inventionother than those above enumerated is that it has great tenacity and canbe applied to the bottoms of vessels, whether the same be wet or dry,and the vessels after having been coated with the paint can, withoutliability of injury to the paint, be immediately placed back into thewater. Furthermore, the paint herein described can be made at aboutone-half the cost of the ordinary antifonling copper paint which is nowin general use. It will thus be seen that paint made in accordance withmy invention possesses many meritorious advantages over the copperpaints heretofore employed.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s

1. An antifouling-paint comprising pinetar, benzin, kidney-oil, rosin, asuitable metallic pigment, and antimony in substantially the proportionsspecified.

2. An antifouling-paint comprising a vehicle, iron, silica, aluminiumand antimony in substantially the proportions specified.

3. An antifouling-paint comprising pine-.

tar, benzin, kidney-oil, rosin, iron, silica, aluminium and antimony insubstantiafihe proportions specified.

HARRY LOUDERBOUGH.

Witnesses:

CHARLES E. SMITH. J OHANNA M. STROPP.

